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Full text of "Text Book Of Mechanical Engineering"

Other Oil Engines.                          709

is placed above j and is connected to it by two pipes (for oil and
air). When the pressure in the two tanks becomes equal the oil
runs into j by gravitation. Lubrication is effected in the usual
manner, at all parts of the engine except the cylinder j the oil
condensed within which is ample for the purpose.

Several forms of oil engines are now made by other firms, but
none spray the oil. In some, liquid oil is evaporated in a hot
chamber, forming vapour and gas, which is mixed with air and
fired as usual; and it is said no deposit occurs in ordinary
working. In others, perfect oil-gas is produced, and then ex-
ploded with air, but the engine must be often cleaned from tarry
matter. (See Appendix II., p. 915 ; also p. 1165.)

Oil Engines for Motor Cars.—The requirements of
motor cars have developed an engine of very small weight
using a light benzine oil called 'petrol.' Further information
on these important engines will be found in Appendix 11.^ p. 915 ;
Appendix IV., p. 963; and Appendix V.9 p. 999; also p. 1182.

Trials of Boilers, Steam Engines, Gas Engines,
and Oil Engines.—See Appendix I 11.,p. 937 et seq.

Balancing of Engines.—See Appendix IL,p. 897, Appen-
dix IV.) p. 967, and Appendix Ff., p* 1199.

Hot-air Engines.—See Appendix //, p. 915.
Steam Turbines.—See pp. 895, 966, and 1168.